... (50℃ - 57℃) Heating Time: 40-60minutes, the heating time depends on the size of the pack, the liquid quantity inside the pack, and the temperature of atmosphere. Function: TheHeating Pad for KneePain could be use...

... heatpack in boiling water with cloth. Heat it for 10 minutes until the crystal is dissolved. The heatpack can be used for providing warm and releasing pain with shape of shoulder/knee/back. Reusable Clay Pack...